Inseam-trimming machine.



A. BATES.

INSEAM TRIP/[MING MACHINE.

APPLICATION FILED JUNE 11,1908.

960,781 Patented June 7,1910.

4 SHEETS-SHEET 1.

Waring/ye.

ANDREW a. 511mm co. Pno'rmumocRAPnERs wasmncfon. a c

A. BATES; INSEAM TRIMMING MACHINE.

APPLICATION FILED JUNE 11, 1908.

Patented June 7, 1910.

4 SHEETS-SHEET 2.

. ANDREW a GRAHAM C0. mommnocrwmezs, WASHINGTON, 0.0.

A. BATES.

INSEAM TRIMMING MAGHINE. I APPLICATION FILED JUNE 11, 1908. 960 781 7 Patented June 7, 1910.

' 4 SHEETS-SHEET 3.

ANDREW & GRAHAM co FuoYO-LWHOGRAPMERS. WASHINGTON, 0 c

A.BATES. INSEAM TRIMMING MACHINE.

APPLICATION FILED JUNE 11, 1908.

Patented June '7, 1910.

4 SHEETS-SHEET 4.

' X 3 .M QZW/ a. C m.

ANDREW B GRAMAM c0. mwamuacmmsns. WAsmNG GH D c UNITE .I STATES PATENT @EEIQE.

ARTHUR BATES, OE LEICESTER, ENGLAND, ASSIGNOE TO UNITED SHOE MACHINERY COMPANY, OF PATEBSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

INSEAM-TRIMMING MACHINE.

To all whom it may concern:

Be it known that I, ARTHUR Barns, a subject of the King of Great Britain, residing at Leicester, in the county of Leicester, England, have invented certain new and useful Improvements in Inseam-Trimming Machines; and I do hereby declare the following to be a full, clear and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to that class of machines used in the manufacture of boots and shoes in which a cutter and cooperating devices arranged in close proximity to the cutting point are employed for cutting or trimming the edges or other parts of the work being operated upon.

Vhile the broader features of the invention may be embodied with advantage in various forms of machines adapted to effect cutting or trimming operations incident to the manufacture of boots and shoes, the in vention relates more particularly to improvements in inseam-trimming machines, and will be explained with special reference to its application to such machines.

In using machines for trimming inse'ams, the trimming knives or cutters are frequently dulled so that they will not operate properly or efficiently by coming in contact with tacks which have been used in operations preceding the presentation of the shoe to the inseam trimmer, and have inadvertently been left in the work. This necessi tates the frequent sharpening of the knife, and in case the knife is so constructed and arranged that it must be removed for regrinding or sharpening, there is a tendency for the operator to attempt to operate with a dulled knife rather than trouble to resharpen it or lose the time required for removing and replacing the knife. In certain machines employing rotary disks or drum or band cutters, this loss of time and inconvenience incident to removing the cutter for sharpening has been avoided by pro viding a grinding wheel, arranged to be brought at will into position to act on the cutting edge of the cutter at a point remote from the cutting point and where the space about the edge is unobstructed by the work supports, guides, or other devices cooperating with the cutter. In those machines,

Specification of Letters Patent.

Application filed June 11, 1908.

Patented. June '7, 1910.

Serial No. 437,937.

I however, in which a reciprocating cutting 'knife having its cutting edge extending transversely of the direction of movement is employed, it has heretofore been necessary to remove the cutting knife in order to grind or sharpen it, with the resulting inconvenience and loss of time above referred to.

It is an object of the invention to obviate this disadvantage in this type of machine by providing a construction and arrangement of knife and cooperating devices which will enable the knife to be conveniently ground or sharpened without removing it from the machine.

One feature of the invention accordingly contemplates the provision in a machine provided with a reciprocating knife and cooperating devices arranged adjacent to the cutting point, of means for effecting a relative displacement of the knife and cooperating devices to present the knife to be ground Without detachment from the machine. Broadly considered, this feature contemplates mounting either or both the knife and the cooperating devices which obstruct the space about the cutting edge for movement in securing the required relative displacement. It is preferred, however, to so mount the devices which cooperate with the knife in the cutting or trimming operation that they may be moved out of working relation with the knife to allow access to the knife edge while in normal working position. In the preferred form of the invention the reciprocating knife is carried in an oscillating block, and cooperates with a part such as a shear blade or an abutment mounted on a plate or carrier that is pivoted or otherwise movably mounted upon the block, so that the part will partake of the oscillating movement of the block while the work is being trimmed, and will be capable of movement away from the knife when the latter is to be ground. The plate carrying the part which cooperates with the knife may and preferably does have a yielding connection with the oscillating block, so that it may move when cooperating with the knife.

A further feature of the invention contemplates the provision in a machine in which the knife cooperates with a guide and some other cooperating part, such as a Shear blade or abutment or another guide, of means for simultaneously moving the guide and other part out of working relation with the knife. This facilitates the removal of the parts into position to enable the grinding or sharpening of the knife, and their return to working position, and contributes to the simplicity and compactness of the construction.

The sharpening of the knife may be rendered more convenient and expeditious by providing the machine with a grinding device, and a further feature of the invention contemplates the provision of a grinding devicewhich may be brought into action at will, and provision for causing a relative movement of the knife and grinding device transversely of the working movement of the knife to effect the grinding of the knife edge. Broadly considered, this feature contemplates the movement of either or both the knife and grinding device to bring them into grinding relation and to effect the relative transverse movement. It is preferred, however, to mount the grinding device for movement into position to act upon the knife when in its normal working position, and to move the grinding device transversely of the working movement of the knife in effecting the grinding. It is also preferred to provide means for determining the path of movement of the grinding device so that an accurate grinding of the knife will be insured without any special care on the part of the operator, and to also provide means for adjusting the position of the grinding device toward or from the knife.

In addition to the features of invention above referred to, the present invention also consists in certain combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description of the preferred embodiment of the invention.

In the drawings Figure 1 is a side elevation of the upper part of an inseam trimming machine embodying the features of the invention in their preferred form; Fig. 2 is a plan view of the parts shown in Fig. 1, with the parts in position for effecting the grinding of the knife; Fig. 8 is a view similar to Fig. 2, showing the parts in position for effecting the trimming operation; Fig. at is a front view of the parts shown in Fig. 1, the grinding device being omitted; and Fig. 5 is a perspective view showing in detail the grinding device in operation.

In the drawings the invention is shown embodied in a machine for trimming inseams similar in many respects to the machine shown and described in my prior Patent No. 877,036, granted January 21, 1908, in which the mode of operation of the of the inseam will permit.

devices in trimming the inseam is fully eX- plained.

The machine shown is provided with a knife C which is secured to a knife holder C mounted to reciprocate in a guideway formed in a block or carrier E. The rear end of the holder 0 is provided with a strap F which encircles an eccentric F secured upon the vertical shaft F, whereby the knife is caused to reciprocate longitudinally. The carrier E is pivoted to the frame at E so that as the knife C is reciprocated by the eccentric, it is at the same time oscillated upon the pivot E Cooperating with the knife in this trimming operation is a shear blade D which is arranged to engage the inner side of the portions of the material to be trimmed, that is to say, the channel of the inseam or the lip of the insole, and thus forms an internal guide for the material. The lower surface of the blade is also shaped to form an abutment for the tread of the face of the shoe. The part D is carried by an arm or plate D that extends over the knife C.

In order that the shear blade, work guide, or abutment D may be displaced away from the knife, so that a grinding tool may be brought into position to act upon the knife without removing the latter from the machine, the arm or plate D which carries the part I) is mounted in a groove or slot which extends along one side of the pivoted carrier E, so that the plate D may be swung laterally out of the slot of the carrier. One end of the sliding plate D is retained in place in the carrier by a pin D secured to the carrier E and engaging a slot in the rear end of the plate.

The end of the plate D which carries the shear blade D is retained in position to co operate with the knife to effect the trimming by a shifting device which may be operated to turn the plate D upon the pin D and thereby displace the shear blade from the knife, or may be turned in the opposite direction to again bring the shear blade and knife into operative relationship. The said device, which is hereinafter more fully described, is so arranged that when the shear blade D is inits operative position, it will permit endwise movement of the plate D. This movement of the plate carrying the shear blade may be caused by variation in the width of the seam, or by the action of the knife upon the seam, the plate D moving upon the pin D in opposition to a spring D. The spring D* is connected at one end to the pin D and at the other end to the plate D, and tends to maintain the plate in its rearward position, or as near this position as the forward side Since the plate D which carries the shear blade D is located in a slot or groove in the side of the block or carrier E, the shear blade will partake of the oscillating movement of the carrier upon the pivot E so that the knife and shear blade will be oscillated together in the oscillation of the machine in trimming the inseam. The cooperating stops D are preferably provided upon the plate D and the carrier E for determining the rearward position of the plate D, and one of these stops is preferably in the form of an adj usting screw which may be adjusted to bring the shear blade D into proper relation with the knife.

The shifting device hereinbefore referred to, by which the plate D is turned on the pin D and the shear blade D is remove-:1 from operative relation with the knife when the grinding is to be effected, is preferably arranged as follows. A shaft G is mounted in bearings on the machine frame and has secured to it a crank shaft G that is connected by a link G with a lug G projecting from the side of the plate D. When the plate is in the position in which the shear blade is cooperating with the knife, the pivots of the link G lie in a lateral line from the axis of the pivot E about which the pivoted block or carrier E turns. The crank shaft G and shaft G turn upon an axis that is parallel to the axis of the pivot E and is located in the same radial line as the pivots of the link when in the aforesaid position, but a little nearer to the pivot E of the carrier than is the outer pivot of the link G which is connected with the plate D. By this arrangement the slight rocking movement of the pivoted carrier E during the operation of the machine does not affect the sidewise location of the plate upon it to any appreciable extent, While the link G permits endwise movement of the sliding plate D in the carrier. The shaft G which carries the crank G is provided with a handle G by'which it can be turned, and a plate G having stops or projections, one or the other of which may be made to abut against the stationary part of the machine according to the position of the handle. By the provision of these stops the shaft G may be turned by the handle G to bring the shear blade D into correct operative relation to the knife, or move to displace it therefrom with certainty and expedition.

In machines of the type to which the present invention particularly relates, there is usually a work guide or support situated beneath the knife, and operating against the outer side of the inseam. In accordance with certain features of the invention, this guide or work support is movably mounted so that it can be displaced from operative relation to the knife when the latter is to be ground. In the machine shown, the work guide is indicated at H, and is in the form of a lever mounted upon a pivot H on the frame of the machine. The pivot H engages with the guide lever by a slot H whereby the guide may be moved forward or backward to adjust the guide in relation to the knife by any suitable means, such, for example, as an eccentrically mounted stop H which engages a slot in the guide lever, and by the rotation of which the guide lever can be moved backward or forward. Any suitable means may be employed for displacing the guide, but it is preferably displaced simultaneously with the displacement of the shear blade by the operation of the handle G. As shown in the drawings, the guide H is raised into position to cooperate with the knife by a cam block G fixed upon the shaft G, and arranged to act upon an inclined part of the guide lever when the shaft G is rotated by the handle G* to bring the shear blade into working cooperation with the knife. The cam block G then retains the guide in its elevated position during the working of the machine by engaging a flat portion H* on the lever. A reverse rotation of the shaft G to remove the shear blade from the knife, at the same time moves the cam G from beneath the guide lever, and allows it to fall clear of the knife, the fall of the lever being limited by a suitable stop (not shown).

As shown in the drawings, the machine is provided with a grinding device in the form of an emery wheel J mounted to rotate in the end of an arm K which is pivoted at K to a support K so that the arm can swing in a vertical plane. The support K is pivoted in a boss K in the machine frame in such a manner that the arm can be swung in a horizontal plane in addition to its other movement. The emery wheel is mounted 011 a spindle J which turns in a. bearing in the arm K, the spindle also carrying a pulley J 2 around which a belt passes, and by which the emerywheel is rotated. The belt also passes around idler pulleys J J, mounted upon the arm K, and receives its motion from a pulley (not shown), suitably located in the machine. The emery wheel is thus free to be swung downwardly by the handle J so as to be brought into contact with the knife, and it can be moved transversely along the edge of the knife by reason of its movement in a horizontal plane. The arm K may be provided with a detent or spring plunger J 5 arranged to engage a recess in the support and hold the 1 arm K in its elevated position. In order to determine the path of movement of the emery wheel when traversed across the knife, the arm K may be provided with an adjustable projection K arranged to lie within a recess or slot in the frame when the arm is in its lowered position. The ends 11 of the slot form stops for limiting the horizontal movement of the wheel in both directions, and the engagement of the pin with the bottom of the recess determines the path of movement of the wheel so as to produce an accurate grinding of the knife.

hen the knife becomes blunted or dull and requires regrinding, the operator turns the handle G from the position shown in Fig. to the position indicated in Fig. 2. This eflects the rotation of the shaft G, and by means of the crank G and link G turns the pivoted carrier D upon its pivot D so that the shear blade D is removed from operative position with relation to the knife C, as shown in Fig. 2. The rotation of the shaft G at the same time turns the cam block G from beneath the part H of the outer work guide, so that the latter is free to drop clear of the knife, as clearly shown in Fig. 5. The knife is now accessible for grinding, and this is accomplished by turning the support K upon its pivot K from the position indicated in dotted lines in Flg. 1 into the position indicated in full lines, so as to cause the driving belt to be tightened, and to bring the wheel while rotating into contact with the knife. The wheel may then be traversed along the knife edge to effect the grinding operation, the pivotal connection of the support K with the boss K on the machine frame permitting this movement. When the grinding operation has been completed, the frame K is thrown into its upper position where it is held by the detent J and the handle Gr is given a reverse movement to restore the shear blade D and work gage H to their normal working positions.

While it is preferred to employ the construction and arrangement of parts shown and described, it will be understood that this construction and arrangement is not essential to the broader features of the invention, and may be varied and modified without departing therefrom.

Having explained the nature and object of the invention, and specifically described one form of apparatus in which it may be embodied, what I claim is 1. A machine of the class described, having, in combination, a reciprocating knife provided with a transverse cutting edge, and devices cooperating therewith in the cutting operation constructed and arranged for relative movement out of their normal working relation to permit the sharpening of the knife without removal from the machine, substantially as described.

2. A machine of the class described, having, in combination, a reciprocating knife and a shear blade cooperating therewith constructed and arranged for relative movement out of working relation to permit the sharpening of the knife without removal from the machine, substantially as described.

3. A machine of the class described, having, in combination, a reciprocating knife provided with a transverse cutting edge, and a work positioning device cooperating therewith constructed and arranged for relative movement out of working relation to permit the sharpening of the knife without removal from the machine, substantially as described.

4:. A machine of the class described, hav ing, in combination, a knife, cooperating devices constructed and arranged to render the knife inaccessible for sharpening when in their normal working relation thereto, and mounted for movement out of working relation with the knife to render the knife accessible for sharpening without removal from the machine, substantially as described.

5. An inseam trimming machine, having, in combination, a trimming knife, and work guiding devices mounted for movement out of their normal working relation with the knife to permit the sharpening of the knife without removal from the machine, substantially as described.

6. An inseam trimming machine, having, in combination, a trimming knife, and guides arranged to engage opposite sides of the material to be trimmed mounted for movement out of working relation with the knife to permit the sharpening of the knife without removal from the machine, substantially as described.

7. An inseam trimming machine, having, in combination, a trimming knife, means for vibrating the knife transversely to the line of feed and for moving it in the direction of the feed, an internal guide arranged to engage the inner surface of the lip of the insole mounted to move with the trimming knife in the direction of the feed and for movement out of working relation with the knife to render the knife accessible for sharpening without removal from the ma.- chine, substantially as described.

8. An inseam trimming machine, having, in combination, a reciprocating knife, an oscillating carrier in which the knife is mounted, a cooperating work guide, a carrier for the guide movably mounted upon the oscillating carrier to partake of the oscillating movement of the carrier during the trimming operation, and for movement out of working relation with the knife to permit the sharpening of the knife, substantially as described.

9. An inseam trimming machine, having, in combination, a reciprocating knife, an oscillating carrier in which the knife is mount ed, a cooperating work guide, a carrier for the work guide movably mounted on the oscillating carrier to partake of the oscillating movement of the carrier, and for movement out of working relation with the knife to permit the sharpening of the knife, and a yielding connection between the carriers to permit movement of the abutment when cooperating with the knife, substantially as described.

10. An inseam trimming machine, having, in combination, a knife, an abutment cooperating with the knife, a work positioning guide, and means for simultaneously moving the abutment and guide out of Working relation with the knife to permit the sharpening of the knife Without removal from the machine, substantially as described.

11. A machine of the character described, having, in combination, a reciprocating knife, means for guiding the work with the parts to be operated upon in position to be acted upon by the knife, a grinding device, means for rendering the grinding device active and inactive upon the knife, and means for causing a relative movement of the knife and grinding device transversely of the Working movement of the knife to effect the grinding of the knife edge, substantially as described.

12. A machine of the character described, having, in combination, a knife, and cooperating devices for guiding the work to be acted upon by the knife relatively movable to render the knife accessible, and a grinding device mounted for movement into position to act upon the knife and for movement transversely of the working movement of the knife to effect the grinding of the knife edge, substantially as described.

13. A machine of the character described, having, in combination, a knife, cooperating devices for guiding the work to be acted upon by the knife relatively movable to render the knife accessible, a grinding device mounted for movement into position to act upon the knife and for movement transversely of the working movement of the knife to effect the grinding of the knife edge, and means for determining the path of movement of the grinding device during the grinding operation, substantially as described.

14:. A machine of the character described, having, in combination, a knife, cooperating devices constructed and arranged to render the knife inaccessible for sharpening when in their normal Working relation thereto, and mounted for movement out of working relation to render the knife accessible, a grinding device, means for bringing the grinding device and knife into grinding re lation, and means for causing a relative movement of the knife and grinding devices to effect the grinding of the knife edge, substantially as described.

15. A machine of the character described, having, in combination, a reciprocating knife provided with a cutting edge extendthereafter transversely of the working movement of the knife, substantially as described.

16. An inseam trimming machine, having, in combination, a trimming knife, means for vibrating the knife transversely, means for guiding the shoe with the parts to be trimmed in position to be acted upon by the knife mounted for movement out of their normal working relation to the knife, and a grinding device mounted for movement into grinding relation to the knife when the guiding devices are out of working relation thereto, substantially as described.

17 An inseam trimming machine, having,

in combination, a trimming knife, means for vibrating the knife, means for guiding the shoe with the parts to be trimmed in position to be acted upon by the knife mounted for movement out of their normal working relation to the knife, a grinding wheel mounted for movement into position to act upon the knife and for movement transversely of the Working movement of the knife to effect the grinding of the knife edge, and means for determining the path of movement of the Wheel during the grinding operation, substantially as described.

18. An inseam trimming machine, having, in combination, a trimming knife, means for vibrating the knife, means for guiding the shoe with the parts to be trimmed in position to be acted upon by the knife and mounted for movement out of their working relation to the knife, a grinding wheel mounted for movement into position to act upon the knife and for movement transversely of the working movement of the knife to effect the grinding of the knife edge, substantially as described.

In testimony whereof I afiix my signature, in presence of two witnesses.

ARTHUR BATES.

Witnesses:

GRACE HOLMES, ARTHUR ERNEST JERRAM. 

